A single ball keychain is a great marketing product. These little replicas are best for promoting nightclubs, music streaming services, silent discos, and even more. You can easily customize your very own by incorporating your business name and company logo. There are a lot of options for designing your keychain, which include up to eight colors for the particular perfect match. Here are a few ideas to get you started: (1) Choose a design for your advertising item. If Check out here 're a nightclub or even silent disco, pick a keychain which includes your logo.